Chennai Trafiic Light - Power Cut - Solar power

Today, when I was reading Dinamalar newspaper, I have noticed one photo. It sis showing the traffic jam and was depicted as due to power cut.

Are those traffic signals are depending on main power supply of the city?
If so, how come no actions are taken to provide uninterrupted power supply till now, or after the power deficiency started in Chennai.
Why can't we install mini solar system to produce required power to function the system without any interrupt?
Why there is no power battery backup system installed to avoid the system failure due to main power supply cut?

Nenjaththai alli konjam thaa thaa thaa - What a song!

Image via WikipediaWhen I was watching this song, "Nenjaththai Alli Konjam Thaa.." from "Kadhalikka Neram Illai" film in Jeya TV - "Thean Kinnam" program, I was searching You Tube to see this song. but I could not find original one. Due to some legal issue, original versions from "Kadhalikka Neramillai" and other several Tamil popular films, I guess.

I found few videos of the same song sung by light music group and TV program participants. Among them, below one is very good one.

Confidence level of Nidhyashree is awesome. She is very well prepared for this song, it seems..

Now enjoy the same..